package com.hqyj.javaSpringBoot.listener;



import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import javax.servlet.ServletContextEvent;
import javax.servlet.ServletContextListener;
import javax.servlet.annotation.WebListener;
import java.io.File;
import java.time.LocalDate;
import java.time.LocalDateTime;
import java.time.format.DateTimeFormatter;

@WebListener
public class LogDestroyListener implements ServletContextListener {
    private final static Logger LOGGER= LoggerFactory.getLogger(LogDestroyListener.class);

    @Override
    public void contextInitialized(ServletContextEvent sce) {
        LOGGER.debug("===Init Context==");
        File destFolder = new File("/log");
        if (destFolder==null|| !destFolder.exists()){
            return;
        }
        //当前日期格式化
        DateTimeFormatter dtf = DateTimeFormatter.ofPattern("yyyy-MM-dd");
        String currentDate = dtf.format(LocalDateTime.now());

        File[] files = destFolder.listFiles();
        for (File file : files) {
            String fileName = file.getName();
            if (!fileName.contains(currentDate)){
                file.delete();
            }
        }
    }

    @Override
    public void contextDestroyed(ServletContextEvent sce) {

    }
}
